140 KANSAS UNIVERSITY SCIENCE BULLETIN. 



6. ST. LAWRENCE 'RIVF.U — continued : 



20. Lake St. Clair. 



C. argillicola. 21, 1. 

 C. diogenes. 21, 1. 

 C propinquus. 21, 7. 



21. St. Clair River. 



C. propinquus. 21, 1. 



22. Lake Huron. 



C. propinquus. 21, 6(?). 

 C. virilis. 21, 3(?). 



23. Saginaiv River. 



C. argillicola. 21, 2. 

 C. propinquus. 21, 5. 

 C. rusticus. 21, 1. 



24. Lake Michigan. 



C. blandingii acutus. 11, 8; 48, 1. 



C. diogenes. 11, 2, 6; 48, 3. 



C. gracilis. 11, 5(?); 48, 1(?). 



C. itnmunis. 48, 1. 



C. propinquus. 12, 1, 4; 21, 6(?). 



C. rusticus. 48, 1. 



C. stygius, 48, 1. 



C. virilis. 12, 1, 3, 4, 5 (?); 21, 3 (?); 48, 7. 



25. Kalamaz'io Biver. 



C. propinquus. 21, 8, 9, 10. 

 C. virilis, 21, 2. 



26. Lake Superior. 



C. affinis. 



C. bartonii robustus. 



C. propinquus. 



C. rusticus. 



C. virilis. 22, 1. 



27. RESTIGOUCHE RIVER. 



C. bartonii. C, 5. 



28. UPSALQUITCH RIVER. 



C. bartonii. C, 6. 



29. MIRAMICHI RIVER. 



C. bartonii. C, 7. 



30. ST. JOHN RIVER. 



C. bartonii. C, 2, 3, 4; 18, 3, ? 6. 



31. PENOBSCOT RIVER. 



C. bartonii. 18, ? 5. 



32. KENNEBEC RIVER. 



C. bartonii. 18, 1, 3, ? 4. 



33. PROVIDENCE RIVER. 



C. bartonii. 20, 1. 



34. PAWCATUCK RIVER. 



C. bartonii. 38, ? 1. 



